Cheap for the price, solidly made, seems durable and running with it on is OK. However, the vest is so wide that doing anything else calisthenic-wise is very difficult - pull-ups? Nope. Push-ups? No way. I'm a fairly broad-shouldered man (5' 9") but it's impossible for me to get my arms close enough together to do anything like that.
It's a great product as long as you bear in mind that this weighted vest is purely for running in and even then it may feel awkward - there is no upper arm mobility to be had here as it is such a wide fit.